Warlord Maggot

Haste, Trample, Vigilance, Affinity- Artifacts
{t}{x} Dad Joke- Maggot tells a joke sooooo bad that {x} creatures (chosen by Maggot's controller) become tapped until the end of their controller's next turn.
{6} Maggot Make Wall- Warlord Maggot permanently becomes an Artifact Wall with Reach in addition to other types.